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along with the \fBPATH\fR environment variable to find the
application's executable, if possible. If it fails to find
the binary, then future calls to \fBinfo nameofexecutable\fR
will return an empty string.
.PP
On Windows platforms this procedure is typically invoked as the very
first thing in the application's main program as well; Its \fIargv[0]\fR
argument is only used to indicate wheter the executable has a stderr
argument is only used to indicate whether the executable has a stderr
channel (any non-null value) or not (the value null). If \fBTcl_SetPanicProc\fR
is never called and no debugger is running, this determines whether
the panic message is sent to stderr or to a standard system dialog.
.PP
\fBTcl_GetNameOfExecutable\fR simply returns a pointer to the
internal full path name of the executable file as computed by
\fBTcl_FindExecutable\fR. This procedure call is the C API
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